Why PLCs fail!

24/10/2016

Boulting Technology has released an infographic to help engineers mitigate problems with programmable logic controller (PLC) based control systems. The handy guide highlights the top five causes of failure and can be downloaded, free of charge, from their news page.boulting_plc_failure_paperPLC-based control systems are invaluable to a manufacturing or processing business because they control and regulate critical production systems and processes. A failed control system can cause significant plant downtime and is likely to be extremely costly; it can also create a hazardous situation when the system is controlling a critical process. By following correct maintenance procedures, businesses can minimise the chances of system failure, which in turn increases productivity, minimises costs and helps to maintain a valuable business reputation.

Faults with PLC input/output (I/O) modules and field devices account for 80 per cent of system failures. Usually, fixing these types of issues is relatively straightforward; however diagnosing them requires a basic knowledge of the system and on occasion specialist test equipment such as a multimeter. In addition, more often than not some form of PLC software diagnosis can aid with identifying the root cause of the fault. Although diagnosing the fault can often be time-consuming and requires specialist knowledge and experience, rectifying it can be as simple as replacing an I/O module or reconfiguring a field device.

Other common causes of failure include environmental issues, the integrity of the system earth, power supplies, failure of battery back-up during a power outage, electromagnetic or radio frequency interference and network and communication problems.

“Understanding the main causes of PLC control system failure means engineers can do more to prevent them,” explained James Davey, service manager of Boulting Technology. “In most cases, the minute a control system fails a business starts to lose money through downtime and missed deadlines. At worst it can result in a hazardous situation that needs immediate attention. Simple steps, such as regular control system health-checks, backing up PLC software and planning for contingency in the event of a power outage helps keep production processes up and running.

“At Boulting Technology, we pride ourselves on our ability and experience to use planned maintenance to prevent problems before they occur. Similarly, our guide to PLC control system failure will help plant engineers look out for warning signs of a failing system and take action before the issue becomes severe.”

@BoultingTech #PAuto #PLC

Increased Activity in Multiple End-use Industries Rejuvenates Global PLC Market!

24/01/2015
Competition spurs innovation in technology and pricing

The global programmable logic controllers (PLC) market witnessed a strong decline in growth in 2012 due to the uncertain economic scenario in the developed world, most notably in the mature markets of North America and Europe. Since 2013, however, the market has witnessed positive growth across all regions. In particular, emerging regions such as Asia-Pacific are displaying uptrends due to increased activity in the construction, water and wastewater, and power industries.

typplcNew analysis from Frost & Sullivan, Global Programmable Logic Controllers Market, finds that the market earned revenues of €8.92 billion ($10.37 billion) in 2013 and estimates this to reach €12.55 billion ($14.58 billion) in 2018. The study covers services, software, modular input/output modules, programmable automation controller as well as large, medium, small and nano PLC. In the coming years, the small and medium PLC segments will be instrumental for market development.

In Europe, the need to enhance efficiency, comply with regulations as well as improve safety and control capabilities are driving the uptake of PLC. Market progress in the rest of the world is primarily fuelled by the desire to optimise assets, engage in reliable process planning, and achieve operational agility.

“With increasing customer demand and intense competition among tier-one companies, the global PLC market is poised to witness a surge in technology and pricing innovation,” said Frost & Sullivan Industrial Automation & Process Control Industry Analyst Karthik Sundaram. “Market participants have been developing products with new design and control functions that surpass traditional definitions.”

For the innovative wave to have a definite impact, boosting the security features in PLC hardware, software, and the network infrastructure should be a key focus area. As cyber security influences end-user perception of PLC, addressing threats will be equally important for continued market expansion.

“PLC manufacturers must offer robust support services, roll out cost-effective products, and communicate winning value propositions to customers,” advised Sundaram. “They should also strive to expand their geographical presence and refine their domain expertise to taste success.”